Which of the following is essential to distinguishing the Pittsburgh protocol for non-heart-beating organ transplantation from murder?
a. Drugs administered during the protocol never accelerate the death of the patient from whom the organs are taken.
b. Patients are declared dead by the Harvard criteria of brain death.
c. Patients (or surrogates) consent to forgo CPR.
d. It mandates doing everything possible for the health of the patient from whom the organs are taken.